Aww, cutie. I love watching them roll, they just look so freaking happy and un-majestic.

On a related note, my best friend keeps a horse at a barn that just rescued a very starved, weak mini-horse named Quickstep. She’s in a very bad way right now and we hope she’ll pull through it all, so please keep her in your thoughts, everyone! I remember when my rottie developed cancer and you guys all sent well-wishes, she went into remission, so who knows? =P
If all goes well, I’ll have Mune send in some pictures of Quickstep as she recovers.

It’s nothing to do with riding skill, he’s (she’s?) just scratching an itch. Not uncommon for a horse. They also roll to cover themselves with dirt to help keep insects off or if they’re shedding.The saddle can also mat down the hair, rolling helps fluff it all back out.